wehub-resource-sync
124 lines
2.5 KiB
Python
124 lines
2.5 KiB
Python
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from PIL import Image
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import PIL.ImageOps, PIL.ImageEnhance
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import numpy as np
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class Posterize:
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def __init__(self):
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pass
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def __call__(self, img, mag=-1, prob=1.):
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if np.random.uniform(0,1) > prob:
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return img
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c = [1, 3, 6]
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if mag<0 or mag>=len(c):
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index = np.random.randint(0, len(c))
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else:
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index = mag
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c = c[index]
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bit = np.random.randint(c, c+2)
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img = PIL.ImageOps.posterize(img, bit)
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return img
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class Solarize:
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def __init__(self):
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pass
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def __call__(self, img, mag=-1, prob=1.):
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if np.random.uniform(0,1) > prob:
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return img
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c = [64, 128, 192]
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if mag<0 or mag>=len(c):
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index = np.random.randint(0, len(c))
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else:
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index = mag
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c = c[index]
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thresh = np.random.randint(c, c+64)
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img = PIL.ImageOps.solarize(img, thresh)
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return img
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class Invert:
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def __init__(self):
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pass
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def __call__(self, img, mag=-1, prob=1.):
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if np.random.uniform(0,1) > prob:
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return img
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img = PIL.ImageOps.invert(img)
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return img
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class Equalize:
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def __init__(self):
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pass
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def __call__(self, img, mag=-1, prob=1.):
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if np.random.uniform(0,1) > prob:
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return img
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mg = PIL.ImageOps.equalize(img)
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return img
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class AutoContrast:
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def __init__(self):
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pass
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def __call__(self, img, mag=-1, prob=1.):
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if np.random.uniform(0,1) > prob:
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return img
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mg = PIL.ImageOps.autocontrast(img)
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return img
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class Sharpness:
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def __init__(self):
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pass
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def __call__(self, img, mag=-1, prob=1.):
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if np.random.uniform(0,1) > prob:
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return img
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c = [.1, .7, 1.3]
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if mag<0 or mag>=len(c):
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index = np.random.randint(0, len(c))
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else:
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index = mag
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c = c[index]
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magnitude = np.random.uniform(c, c+.6)
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img = PIL.ImageEnhance.Sharpness(img).enhance(magnitude)
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return img
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class Color:
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def __init__(self):
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pass
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def __call__(self, img, mag=-1, prob=1.):
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if np.random.uniform(0,1) > prob:
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return img
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c = [.1, .7, 1.3]
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if mag<0 or mag>=len(c):
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index = np.random.randint(0, len(c))
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else:
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index = mag
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c = c[index]
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magnitude = np.random.uniform(c, c+.6)
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img = PIL.ImageEnhance.Color(img).enhance(magnitude)
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return img
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